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4 Ways of Regulating Body Temperature

C C E R

Involuntary physiological response

Conduction: is the process of losing heat through physical contact with another object

Convection: is the process of losing heat through the movement of air or water

Evaporation: is the process of losing heat through conversion of water to gas (evaporation of sweat)

Radiation: is the process of losing heat through infrared rays (solar radiation)

Effectors Responses to Low & High Temperatures

How Does Thermoregulation Work?

- Sweat Glands

- Skeletal Muscles

- Adrenal & Thyroid Glans

- Arrector Pili in Muscles

- Smooth Muscles in Arterioles

- Works as a human "thermostat" to prevent heat build up or heat build up or loss of heat

- Receptors = 1) Skin receptors (Peripheral)

2) hypothalamus receptors

- Effector examples: Sweat glands, adrenal thyroid glands, skin capillaries etc...

Homeostasis

"Homo" = Same "Stasis" = Unchanging

Temperature Control - Thermoregulation

Activity

- Process of body regulating and maintaining a consistent internal environment

- Feedback systems contain: senor, control centre & effector

- Negative and Positive feedback systems are the two main components of homeostasis

No Homeostasis = Death

2) What is located in the brain?

4) What is happening to the blood

capillaries?

_8._ F

Q: Where does body heat come from?

A: Deep organs such as: liver, brain & heart. The contraction of skeletal muscles produces heat as well

Q: What is thermoregulation?

A: The maintenance of a consistent body temperature (37.6 C)

Q: Where does thermoregulation occur?

A: The hypothalamus (region of brain that regulates bodily functions)

1) What type of involuntary heat loss is happening?

5) What type of heat regulation is this?

3) What temperature must your body be at in order for your organs to function properly? (Fahrenheit)

Homeostasis in the Human Body

Temperature Control

By: Sydney St. Louis

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